Not that I know of. This doesn't even make sense when you realize that LAN devices talk directly to one another. Other than DHCP, they have no need to communicate w/ the router unless routing is in fact required. But LAN devices are always bridged wrt each other. You could literally replace the router w/ a simple switch (and static IP assignments) and get the same results, at least as far as LAN-to-LAN traffic is concerned.